Gearing.



J. A. NITCHIE.

GEARING.

APPLICATION FILED DE01?, 19121 Patented Feb. 17, 1914.

SHEETS-SHEET l.

J. A. ITGHIB.

GBABING.

APPLIUATION FILED DEO.12, 1912.

Patented Feb. 17, 1914 6 SHEETS-SHEET 2.

J. A. NITCHIE.,

GEABING.

APPLICATION PLED DBO.12, 1912.

Patented Feb. 17, 1914 S14/mudo@ Jzzwml HWIN.. kw

J. A. NITGHIB.

SHARING.

H APPLICATION FILED DE()A 12, 1812. 1,087,171

6 SHEETS-SHEET 4.

EKM A 7 /laaeod ,M Y, /wwmp Patented Feb. 17, 1914.

J. A. NITCHIE.

GEARING.

APPLICATION FILED 13110.12, 1912.

Patented Feb. 1'7, 1914.

6 SHEETS-SHEET 5.

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UNTEB STATES PATENT FC JOHN A. NITCHIE, QF ELM CREEK, NEBRASKA.

GEARING.

Application filed December 12. 1912.

Be it known that I, JoHN A. Nrrtrriri, a

citizen of the United States, residing' at ilhn rech', in the comit;1 of Buffalo and rState of Xebraslra, have invented a new and useful Gearing; and I do hereby declare the following` to be a full, clear, and exact descrii'ilion et' the invention, such will enable others skilled in the art to which it uppertains to malte and use the same.

This invention relates to a new and useinl ilii'l'erentiul gear drive for automobiles`r includingconne'itions between it and an engine' for transmitting' power thereto and Yfurther including controlling means for both the power transmission and the tifferential gearing.

It is an object of the invention to ini-- prove, simplify and renderA more eiieient the general construction of such dii'ferential gearing;n power transmission and control mechanism` in order to obtain better and more at vantaireous results.

There are disclosed in the drawings cer 'tain features of construction, hut in iii-a tical fields these. features mayv necessitate alterations, to Awhich the patentee is entitled, provided the alterations fall within the scope 0l what is claimed. v

rEhe invention comprises further features and combination of parts,` as hereinafter' set forth, shown in the drawings and claimed.

ln the drawings. Figure 1 is a view in side elevation showing the improved dition cntial gearing. the power transmission mechanism and the control therefor constructed in accordance with the invention. Fig'. is a sectionai viewe Fig. 3 is a plan vienT show the easing tor the gearing' partlv in section. Fig. Ll is a vertical sectional view through the gearing. is a sectional view on iine :fi-5 otliig. Q. Fin'. 6 is a sectional view transverselyr through the controlling; mechanism. Fir; i' is a sectional view on line '7-7 ot' Fig'. G.

/ic differential gozarng.--Ret`errin;r more particularly to the drawings 1 designates the casing', which is annular in conteur,l andl provided with an offset casingr 2, the cover plate 3 of which is bolted in place as at Projecting' outwardly trom the cover plate a frame 5 havingy an elongated liiearing G for the reception of a portion of the power transmission shaft 7. This portion 7 of the Specification of Letters Patent.

patented Feb. 17, 'fi.

serial No. 736,380.

power transmission mechanism at its rear end is rectangular in cross section, and is mounted in a bearing 8 of the casing of the said gearing, ln other words, the hearing 8 j connected to a central partition Wall 9 of said casing.

The easing l is provided with a pair of cover plates 91 and l() having tubular shafts ll and lf2. rThese cover plates are bolted in place as shown at 13. The shafts 11 and 12, which are tubular or hollow receive loops li of the usual springs l5, vwhich connect bef tween the body 17 of the vehicle and the said tubular shaft.' The tubular shafts 11 and 1Q are reinforced relative to the frame 5, bv means of the brace rods 18.

Mounted in bearing of the partition wall 9 and in the tubular shafts are the usual drive axles or shafts 20a'1 and 20", on the outer ends it cach of which the rear wheels 2l, of the vehicle are mounted. Fixed io rotate with the drive axle Q0 is a bevel gear 2Q, arranged on the right hand side of the partition wall i), reference being had to lfigr. I. On the left hand side of the partition wall i), reference being had to Fig. 3, and looselv7 monnted upon the drive axle 2U" is a gear 24 having two sets of teeth 25 and LER the teeth 25 being nearer the axle, .vhile the teeth Q6 located atI a considerable distance from the drive shaft or axle 20h, The 2gear {il} provided with a casing, connected to the gear as at Q7. This casing iucloses a gear 29, which is fixed upon the` pinions fi() are mounted upon stuh shafts 31' which are mounted in bearings of said casingr. Relative to the drive axle or shaft 20", the stub shafts are arranged radially. The pinions 9,0 mesh with a gear 3Q, which is keyed to the drive axle. orshaft 20h.

Slidahljvv mounted upon the rear portion 7 oi the power tranz'fimission shaft, which portion is rectangular infcross section, are three pinions 53, 3l und The pinion 33 is adapted to be thrown in mesh with the teeth QC of the gear Q4, in order to rotate the drive axles 'or shafts and tlve rear automobile wheels at low speed, while the gear is adapted to he thrown in mesh with the teeth of the,;rear Q4, in order to impart high speed to the drivel shafts' 20a and 20 and the automobilewheels; whereas the pinion 34 is adapted to be thrown in inesh with thegear 22, for reversing the drive shafts or axles in its movements.

The frame 5 is provided with a pair of bearings 37 and 38, secured in place by the bolts Mounted in these bearings 37 and are three rods 40, 41 and 42, which terminate at their rear ends in laterally extending forks 13. 'the fork of the rod 40 embraces a grooved portion 44 of the pinion 33, whereby the pinion may be adjusted upon the rear portion 7 of the power transmission shaft, so as to throw it in mesh with the teeth 26, while the fork of the rod 42 erhbraces a. greoved portion 45 of the pinion 35, whereby the said pinion 35 may be thrown in mesh with the teeth 25 of the gear 24, for obtaining high speed; whereas the fork of the rod 4l engages a grooved portion of the pinion 34, in order to shift the said pinion 34 in mesh with the gear 22, whereby the drive shaft or axle 2O may be reversed in its movements. However, only one of the pinions 33, 34 and 35 may be shifted at a time.

Power transmission meCzaniSm.-Refer ring more essentially to the power transmis sion mechanism, it will be seen that the frame 5 at it forward end terminates in laterally extending offset ears 47,. which are pivoted upon the studs of the ears 48, which form apart of the plate 49. This plate 49 is bolted at 50 to the transverse plate 51 of the frame of the machine. The plate 51 is provided With an upstandinoportion 53, in which a threaded shank oY coil spring 54 is mounted. Threaded upon the shank 55 is a nut 56, for adjusting' the shank in position relative to the upstanding portion of the said plate 52. Arranged forwardly of the plate 51 and secured to the frame 17 is an angular bar 58. Mounted in bearings 59 of the plate 51 and the har 58 is the intermediate portion 60 of the power transmission shaft, the endlil of which is provided with a universal coupling lconnecting with the portion 7 of said power transmission shaft, While the end (33 of said intermediate portion (30 has keyed thereto afriction cone 64. rThis friction cone. is constructed with a grooved portion 65, which is embraced by the forked end U6 of a rod l(37. This rod (i7 is mounted slidably in a bearing (38, which is bolted or otherwise secured to the bar 58. The end (i9 of the rod 07 is connected to the coil spring 54. When the rod 67 is shifted, in order to shift the cone 64 (which constitutes a clutch member) teleseopieally into the clutch member 70 of the engine shaft 71, the coil spring 54 is putv under tension, so that when pressure is relieved upon the rod (i7, the spring will return said rod to its initial posit-ion. The engi ne shaft is mount ed in bearings 72 and 73, while the engine t which is only outlined in elevation) may be of any conventional form 01 construction.

Controlling mec/ianimm- Referring more especially to the controlling mechanism, it will be observed that the frame 17 is provided with a plate bracket 75, bolted to the frame as at 711, and formed into a hearing 77, in which the telescopicaily arranged shafts 78, 79 and SO are mounted. rthe shaft 78 at one end is proiided with a downwardly extending' ari'n 81. to uhich a bar S2 is connected. The `end Sil of this har is connected to the rod 41. in order that when the shaft 78 is rocked, the rod 41 will be reciprocated, for shifting' the pinion $4, in order to reverse the movement of the drivt shaft or axle 20, and its' attendant parts. 'Ehe tubular shaft 7S at one end is provided with a downwardly extending arm 8l, and connected to it, at one of its ends a bar 85, which in turn connectsy pivotally to the rod 40 in order to shift the pinion 53, for adjusting the differential gearing for low speed. Further, the. tubular .shaft S() also provided with a downwardly extending' arm 87. Connected to the :mn S7 a har The end S9 of the bar 88 is pivotally connected to the rod 42. whereby the pinion 33 may be shifted, so as to operate the drive shaft or axle 2O at high speed. Also journaled in the roll bearing' 7T tubular shaft 90, through which the shafts 7S, 7i? and 8O telescope. This shaft il() at one end is provided with an arm (l1, which has a slot and pin connection $12 withy G7. The other end of the shaft provided with an ufinvardly and forwarty extending arm 93, laterally from which another arm 94 projects. This arm ll-t is disposed in the path of the low` high, and reverse @paard le vers 9U, 97 and $18, so that when an)Y one of said. levers is operated for changing`- the gearing', tho shaft fl() will lii rockt-(hin order 1:0 throw the Clutch connections between the interuuwdiatc portion t3() of the power transn'iission shaft and the engine .section of said shaft, in gear, wlu-reby the power shaft may be opi-rated, n

The lover tlt is: carried by the shaft 79,

lwhile the lever 97 is carried by the shaft 80,

Whereas the lever flti, in: carried by the shaft 78. These levers 9'?. "r', aud UR are provided with tllo usual dogs Utl. wliii'li are designed to be operated lu' the usual liauf ,grips 100, so as to cooperate with the rack quadrants 101. T hese quadrants are ion.-i'-ucte l relui tive to one another in order to l'orm a frame v1.02, bolted or otherwise secured to a bracket plate 108, which projects laterally from the frame '17. The hund grips a re connected to the dogs 99 by the. rods .lll-'l'. Also bolted or otherwise secured to the bracket plate 1.03 is a plate 10G, one side of which is formed into a series of sleeves 107. One of the end sleeves is formed with a transverse har 108. Mount-ed in each frtleevc is u ball bearing 109. Threaded in an upturncd flange 110 of the bracket plate 103 is a screw member 111, which is provided at one end with a head 112 whereby the screw may be rotated, while the other end of the screw has swiveled to it a device 113, provided with a yieldable mem ber 114, adapted to bear yieldably against one of the l3nd ball bearings, so as to hold the ball bearings in place, the other end ball bearing against the bar 108. lVhen one or the other of the levers 96, 97 and 98 is operated, it moves between the sleeves 107, thereby engaging between the balls, which are adjusted and held yieldably by the yieldable device only sufficiently' to admit one of the levers 9G, 97 and 98 at a time between said balls, thereby preventing the gearing from being changed to low speed, until after the high speed is cut' out, or to reverse speed, until either the low or high speed is cut out, and vice versa.

From the foregoing, it will be ascertained, that an improved, efficient, cheaper and more advantageous gearing, including a power transmission mechanism, and a control mechanism for both have been devised, and one which has been found practicable.

The invention having is claimed as new and useful is :c l

1. In a device of the kind described, a

ower transmission device including a series of bodily movable gears, a series of levers each. arranged to move a separate gear of said series, a series of spaced and alined sleeves between which said levers can move, balls mounted in said sleeves and arranged to close the remaining spaces between the been set Jforth, whatv sleeves when either of said levers is moved to position between adjacent sleeves, and means to hold said balls yieldably to ether.

2. In a `device of the kind descri ed, a power transmission device including a series of bodily movable gears, a series of levers each arranged to move a separate gear of said series, a series of spaced and alined sleeves between which said levers can move, balls mounted in said sleeves and arranged to close the remaining spaces between the sleeves when either of said levers is moved to position between adjacent sleeves, means to hold said balls yieldably together, and other meansr to adjustably limit the move ment of said balls.

3. In a device of the kind described, a power transmission device including a series of bodily movable elements and a clutch having a movable member, levers each arranged to move one of said elements, a lever in the paths of said first lever and arranged to be moved in one direction by the movement of either of the first levers in the same direction, the last mentioned lever being arranged to move the clutch member, and means operated by the movement of any one of the lirsl levers to lock all the remaining levers from movement.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. y

l JOHN A. NITCHIE.

vitnesses J. C. THouPsoN, A. M. BROWN. 

